Large-scale producing method for non-crystal carbon nano tube

A technology of nanotubes and amorphous carbon, which is applied in the field of preparation of amorphous carbon nanotubes, can solve the problems of complex post-processing, complex equipment, and low yield, and achieve simple and easy methods, low energy consumption, and high efficiency. Effect

Inactive Publication Date: 2007-11-14
NANJING UNIV
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these preparation methods all have problems such as low yield, high energy consumption, complex equipment, the need to add catalysts, and complicated post-treatment.
So far, there is no report on the large-scale preparation of amorphous carbon nanotubes at low temperature, using simple equipment, and without the participation of catalysts.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Large-scale producing method for non-crystal carbon nano tube
  • Large-scale producing method for non-crystal carbon nano tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1. Preparation of amorphous carbon nanotubes

[0016] A method for preparing amorphous carbon nanotubes, which is to dissolve 2mmol ferrocene in 50ml carbon tetrachloride and stir evenly, move it into a stainless steel reaction kettle with a polytetrafluoroethylene substrate, and then heat up to 180°C for constant temperature reaction for 12 Hour. After the reaction, the filtered black product was washed three times with distilled water and ethanol in sequence, and finally dried in vacuum at 80° C. for 10 hours to obtain 0.8 g of amorphous carbon nanotubes. The product is measured by powder X-ray diffraction (XRD), and the result (see accompanying drawing 1) shows that there is no obvious diffraction peak, and it is a completely amorphous product. No heterogeneous peaks were found, indicating that the purity of the product is relatively high. Through SEM analysis (see Figure 2), it is observed that the amorphous carbon nanotube of the present invention has ...

Embodiment 2

[0017] Embodiment 2. Preparation of amorphous carbon nanotubes

[0018] Dissolve 2mmol of ferrocene in 50ml of carbon tetrachloride and stir evenly, move it into a polytetrafluoroethylene-lined stainless steel reaction kettle, then raise the temperature to 180°C for constant temperature reaction for 18 hours, and the other preparation conditions are the same as in Example 1. Likewise 0.8 g of a product of similar size and form was obtained.

Embodiment 3

[0019] Embodiment 3. Preparation of amorphous carbon nanotubes

[0020] Dissolve 2mmol of ferrocene in 50ml of carbon tetrachloride and stir evenly, move it into a polytetrafluoroethylene-lined stainless steel reaction kettle, then raise the temperature to 160°C and react at a constant temperature for 24 hours. The other preparation conditions are the same as in Example 1. Likewise 0.6 g of a product of similar size and form was obtained.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
Login to view more

Abstract

It is a kind of method used to make nanophase pipe of amorphous carbon. It dissolves 1mmol of dicyclopentadienyl iron in 20-50ml of carbon tetrachloride and mix them evenly, move the mixture into the stainless steel autoclave underlayed by polytetrafluoroethylene, then improve the temperature to 120-180deg.C and make them into isothermal reaction for 12-72 hours. After the isothermal reaction, scrub black outcome got after filtrating using distilled water and ethanol for 3 times in turn, dry it for 10 hours at 80deg.C in vacuum, then get the nanophase pipe of amorphous carbon. The producing rate of making nanophase pipe of amorphous carbon exceeds 90%, energy dissipation is low with high efficiency, it needn't append activator, the method is simple and easy to operate, the raw material is easy to get, the scale is easy to enlarge, and it is suitable for multitudinous production of serialization.

Description

technical field [0001] The invention relates to a method for preparing amorphous carbon nanotubes. Specifically, a large-scale preparation of amorphous carbon nanotubes was made using a low-temperature solvothermal method. Background technique [0002] Since S.Iijima of Japan Electronics Corporation (NEC) formally discovered carbon nanotubes in 1991 [referring to: Iijima S., Nature, 1991,354,56.], set off on a worldwide scale to be represented by carbon nanotubes. One-dimensional nanostructure research upsurge [see: (a) Rothschild A., J.Am.Chem.Soc.2000, 122, 5169. (b) Pan Z.W., Science2001, 291, 1947.]. The structure of carbon nanotubes can be regarded as a hollow carbon cage tube formed by single-layer or multi-layer, tiny cylindrical graphite flakes. Its scale, special structure and composition endow it with extremely unique properties, and are highly regarded by the scientific community. Widely concerned, it is of great significance both in basic scientific research an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 沈健民侯文华朱俊杰
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap